People feel first, then look for reasons to justify the feeling. So an email that opens with product features loses to one that opens with the reader's situation. But pure emotion with no facts doesn't sell either: the reader nods and moves on.
Research backs this up. Les Binet and Peter Field analyzed hundreds of campaigns in the IPA Databank and found that emotional campaigns win over the long run, while rational messages win where you need a fast, direct response. A sales email is a direct-response tool, but a human reads it. It needs both.
The formula we work with:
- Emotion — the reader recognizes their situation and wants to keep reading.
- Proof — a case, a number, or a guarantee that makes the promise believable.
- One simple action — a button that makes the next step obvious.
In our experience, changing the order alone — emotion first, facts second — lifts click-through by 1.5 to 2 times. The offer stays exactly the same.